CODEWITHSUNDEEP
javascriptbit-manipulation
Foreever
Foreever

Reputation: 7488

How to perform bitwise operation of binary numbers?

I need to do bitwise OR of two binary strings.

For example, if the binary strings are '110001' and '101101', then I need the result as '111101'.

I tried this, but it gave me strange results.

console.log(110001 | 101101);

Upvotes: 0

Views: 130

Answers (2)

Aadit M Shah
Aadit M Shah

Reputation: 74244

You can't write binary numbers as literals in JavaScript. The only numeric literals allowed are:

  1. Decimal: 1337 (One thousand and thirty-seven).
  2. Octal: 02471 (One thousand and thirty-seven in base 8).
  3. Hexadecimal: 0x539 (One thousand and thirty-seven in base 16).

To write binary numbers you need to use parseInt with base 2. To convert a number to binary representation you use toString with base 2. Hence you would write it as:

var a = parseInt("110001", 2);
var b = parseInt("101101", 2);
var c = a | b;

console.log(c.toString(2));

Simple.

Upvotes: 3

ioseph
ioseph

Reputation: 1917

You need to explicitly cast the binary representation to it's int equivalent. (otherwise it's interpreted as 110001 (base 10)):

console.log((parseInt('110001',2) | parseInt('101101',2)).toString(2));

The output is then cast back to it's base 2 representation (string)

Upvotes: 2

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